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A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 8156785 | Method and apparatus for determining a value that correlates to available traction A method and apparatus for determining a value that correlates to available traction that is a lightweight, hand-held, portable apparatus that may include a pad of material, a translating assembly, a load assembly, a first device to move the pad and a second device ... | 04/17/2012 |
| 8151625 | Test device for tribological examination of materials A test device for the tribological examination of materials, including at least one first test body that has a first test surface, a drive unit for this at least one first test body that can be driven in oscillating and/or rotating fashion, a measurement device for ... | 04/10/2012 |
| 8151624 | Method for measuring surface smoothness of hair A method for measuring the surface smoothness of hair comprising the steps of: a) providing a means for measuring hair surface smoothness; b) using said means for measuring hair a surface smoothness to obtain a mea... | 04/10/2012 |
| 8146402 | Dynamic coefficient of friction measuring device having a track with an arcuate portion The invention provides a device for measuring the dynamic coefficient of friction of a surface. The device includes a track having an arcuate portion which is shaped to mimic an arc of travel of a pendulum; a shoe mounted so as to be movable along the track, and a b... | 04/03/2012 |
| 8074488 | Device for measuring coefficient of friction A device for measuring the coefficient of friction between a test surface and a test material, comprising a frame, a skid pad comprising the test material and attached to an underside of the frame to contact the test surface, a longitudinal force measuring device at... | 12/13/2011 |
| 8069702 | Rolling ball tack measuring apparatus A measuring apparatus to measure adhesion of a tape includes a supporting plate slanting related to horizon, and a ball. The tape is attached to the supporting plate with an adhesive surface opposite to the supporting plate. The ball rolls on the tape along the supp... | 12/06/2011 |
| 7987693 | Method and device for automated electronic green speed measurement Method and apparatus for measuring the coefficient of rolling friction or speed of a horizontal surface over which a round object is rolled such as a putting green encountered in the game of golf. The method includes a device for launching a ball across the surface ... | 08/02/2011 |
| 7908900 | Friction measuring device A device and method for measuring friction on a surface, such as a road, allow for accurate and reliable measurements by preventing the slipping of a pilot wheel. The device includes a pilot wheel and a measurement wheel mounted on shafts in a wheel box and arranged... | 03/22/2011 |
| 7788965 | Portable friction testing device A portable device for measuring friction, especially friction between tire treads and road surfaces is disclosed. The portable friction tester is shaped as an equilateral triangle providing three points of contact for samples in the road surface. ... | 09/07/2010 |
| 7784326 | Chuck for friction test apparatus A friction test apparatus includes a base structure and a receptacle secured to the base structure. At least three lower test balls are positioned in the receptacle. The friction test apparatus includes a motor having a rotatable shaft providing powered rotation of ... | 08/31/2010 |
| 7752883 | Tribometer The present invention relates to a tribometer (1) comprising: a first support assembly (2) configured to receive a central test piece (3), which test piece is circularly cylindrical, and to drive it in rotation about its axis (X); and a second s... | 07/13/2010 |
| 7735362 | Thermomechanical sensor for fluid diagnostics A method for diagnosing a fluid includes sensing a property of the fluid and the temperature of the fluid at the time the property is sensed, then determining the status of the fluid from the sensing. The sample volume may be small in comparison to the total fluid v... | 06/15/2010 |
| 7673495 | Method for calculating a friction-slippage curve for a tire A method for calculating a μ-slippage curve for a tire based on laboratory data derived from characteristic values of a used compound, of the road surface and a vehicle without producing a complete tire, and a method for calculating a μ-slippage curve for a tire i... | 03/09/2010 |
| 7614275 | Method and apparatus for determining coefficient of friction The coefficient of friction of an elastomeric sample can be determined by: (a) providing a friction test machine having a rigid wheel with an outer surface defining a curvilinear friction surface, a sample holder and, a force measurement device; (b) placing the elas... | 11/10/2009 |
| 7600411 | Surface friction testing apparatus Surface testing friction apparatus comprises a trolley and an inclined ramp. The trolley and ramp are arranged such that a slider on the trolley comes into contact with the surface during a test run over a surface, the friction coefficient of which is to be determin... | 10/13/2009 |
| 7591166 | Tactile sensor and use thereof A tactile sensor of an embodiment of the present invention includes: a sensing section having an elastic member at a portion which contacts a measurement target; an image acquiring section for acquiring as image information the state of a contact surface of the meas... | 09/22/2009 |
| 7591167 | Methods and systems for measurement of tire rolling resistance Method and apparatus for testing tires to measure the rolling resistance generated while a tire rolls under a radial load, the method including the steps of mounting two tires on spindles having substantially parallel axes; wherein the two tires are substantially eq... | 09/22/2009 |
| 7584645 | Apparatus and method for measuring friction forces According to an exemplary embodiment, a set of three-dimensional force sensors is used, distributed on one face of a support. Each sensor outputs signals representative of a force applied by an object on this sensor. An electronic processing unit determines componen... | 09/08/2009 |
| 7584646 | Device for measuring coefficient of friction A device for measuring the coefficient of friction between a test surface and a test material, comprising a frame, a skid pad comprising the test material and attached to an underside of the frame to contact the test surface, a longitudinal force measuring device at... | 09/08/2009 |
| 7472577 | Hair sensor A hair sensor, which can suppress mixing of external noise to a minimal level when a sliding sound of hair is detected, amplified, and output as an audio output in order to estimate surface characteristics and the degree of hair damage, and which can be easily used,... | 01/06/2009 |
| 7454948 | Method of measuring coefficient of dynamic friction between golf ball and collisional plate By bringing a golf ball into collision with a collisional plate and measuring a coefficient of dynamic friction at this collision, contact force at the time of collision between an actual golf club and the golf ball is analyzed and spin rate of the golf ball is esti... | 11/25/2008 |
| 7426855 | Method and apparatus for testing the adhesive strength of overlays of plain bearing bushings A method and an apparatus for testing the adhesive strength of overlays attached to the inside of plain bearing bushings. The method is characterized in specifying clearance between the plain bearing bushing tested and a rotating or oscillating pin extending through... | 09/23/2008 |
| 7398669 | Test apparatus and method of measuring surface friction of a brake pad insulator material and method of use of a brake dynamometer A test apparatus for measuring surface friction of a damping material such as brake pad insulator material includes a rotor configured to support the damping material for rotation therewith, an actuator pressurizable to apply axially-inward force to the damping mate... | 07/15/2008 |
| 7373800 | Friction test apparatus and method A friction test apparatus includes a base structure and a receptacle secured to the base structure. At least three lower friction surfaces are positioned in the receptacle. The friction test apparatus includes a motor having a rotatable shaft providing powered rotat... | 05/20/2008 |
| 7364196 | Vehicle control method and vehicle control apparatus When feedback control is carried out to ensure that the drive torque of an electric motor for driving each wheel of a vehicle should be equal to a motor torque instruction value, micro-vibration is applied to each tire by superposing a micro-vibration signal to a dr... | 04/29/2008 |
| 7347087 | Engine oil leak test system and method A system and method for testing partially assembled engines for possible oil leaks. The system includes engine pressurizing devices that are automatically controlled by a controller according to a predetermined control program based upon the engine model type being ... | 03/25/2008 |
| 7328118 | Method of determining the mass unbalance of an actuator The present invention is a method of determining mass unbalance of an actuator mechanism in a system. The method includes calculating a center of gravity in first x and y components with respect to a first coordinate system of the actuator mechanism. The method also... | 02/05/2008 |
| 7317233 | Anchors for microelectromechanical systems having an SOI substrate, and method of fabricating same There are many inventions described and illustrated herein. In one aspect, the present invention is directed to a MEMS device, and technique of fabricating or manufacturing a MEMS device having mechanical structures and anchors to secure the mechanical structures to... | 01/08/2008 |
| 7302868 | Method for measuring forces acted upon tire and apparatus for measuring forces acted upon tire There is provided an apparatus for measuring forces acted upon a tire in which a radial force and a peripheral force acting to the tire, which are required for the high precision measurement of a friction coefficient on a road surface, are simply measured in a high ... | 12/04/2007 |
| 7299701 | Compressive fatigue and energy test apparatus and method for testing clutch plate friction materials The present invention presents a means for simultaneously testing the compressive strength and measuring the thermal energy dissipated by a given friction material during slip. The testing apparatus includes a rotatable flywheel that rotates a transmission reaction ... | 11/27/2007 |
| 7299571 | Ease of ironing measuring apparatus and method An apparatus to measure ease of ironing comprises a base supporting a vertical rail assembly; a lockable roller bearing block that rolls vertically on a vertical rail assembly for locking and raising and lowering the block at a selected location according to the rai... | 11/27/2007 |
| 7290436 | Device for measuring the static and/or dynamic friction coefficient of a surface The present invention relates to a device for measuring the static and/or dynamic friction coefficient of a surface, in particular a natural or artificial grass surface, which device comprises a housing placed on supports, which is to be positioned on the surface to... | 11/06/2007 |
| 7274995 | Apparatus and method for identifying possible defect indicators for a valve A method, apparatus, and computer program are provided for identifying a defective valve. The method, apparatus, and computer program identify one or more indicators of a possible defect in the valve at a plurality of resolution levels. The one or more indicators ar... | 09/25/2007 |
| 7260458 | Steering device In a steering apparatus, in accordance with a grip limit control process (30b′), it is determined whether or not a grip degree ε estimated by a grip degree estimation arithmetically operating process (30a) is less than a predetermined ... | 08/21/2007 |
| 7257984 | Miniaturized sensor device for detecting characteristics of a fluid, in particular a lubricating oil A miniaturized sensor device comprises at least one pair of active projecting elements or cantilevers, which are set parallel to one another and at a micrometric or sub-micrometric distance apart and are designed to be submerged at least partially in a fluid. Each p... | 08/21/2007 |
| 7252304 | Positioning vehicle for positioning a test probe Described is a method for operating a positioning vehicle for positioning a test probe in defined intervals along a travel line, as well as to a positioning vehicle for carrying out the method. The positioning vehicle contains a traveling vehicle base part with a gu... | 08/07/2007 |
| 7240562 | Method for modeling material constitutive behavior In modeling material constitutive behavior, a methodology determines tool-chip friction and a position of a stagnation point on a cutting tool. The methodology includes measuring a ratio of cutting force to thrust force and measuring a chip thickness, hch... | 07/10/2007 |
| 7237445 | Test fixture for the aging of wiper blades in a laboratory A test fixture facilitates the laboratory testing of windshield wiper blades for vehicles. The test fixture includes a base frame on which are mounted a number of windshield wiper arms oriented generally parallel for engagement with a stainless steel test surface. P... | 07/03/2007 |
| 7234339 | Road surface frictional coefficient estimating apparatus A braking/driving force fx is calculated at S102, and a lateral force Fy is calculated at S103. At S104, reference is made to a preset map to select a road surface μ estimation part to be used for determination (to select a first road surface Î... | 06/26/2007 |
| 7225663 | Apparatus for measuring green-speed A method and apparatus is employed in determining the green-speed of a golf putting green. The method is achieved by selecting a site on a putting green having a relatively flat surface and determining the extent of putting surface available for measurements, settin... | 06/05/2007 |
